摘要
度量空间X上的紧支集概率测度全体组成的空间记为(A(X),dH),dH为Hutchison度量,A(X)上的弱收敛拓扑记为(A(X),*)。本文研究了X与A(X)、(A(X),dH)与(A(X),*)之间的联系,指出:当X局部紧时,恒同映射(A(X),dH)→(A(X),*)为连续的;当X紧时,上述两拓扑等价;X紧等价于A(X)紧;A(R)既不完备,也非局部紧。最后,本文解决了X完备的条件下,A(X)上的Markov算子的迭代收敛性,同时涵盖了文献[4]中X紧的情形。
(A (X),dH) denote the set of Probability measures with conpact support on metric space(X, d), equipped with Hutchison metric dH. And (A (X), * ) is weakly convergert topologsof A (X). The relations between (A (X), dH) and (A (X) * ), X and A (X) were studied:the identical map (A (X), dh) → (A (X) * ) is continuous when X is locally copact; thecompletness of X does not imply completness of A (X).